I am binding the java library Material CalendarView. With a set of 12 transforms in Metadata.xml I could bind the library with 0 errors and 15 warnings. I have added Support Library v4 Component ver 23.1.1 in the binding project as the jar file had a dependency on that. Also I have ensured that all the Resource assets are included in the jar file.
When I use this library in an Android Sample like below,
var materialCalendar= new MaterialCalendarView(this);
this exception gets thrown
Failed resolution of: Lcom/prolificinteractive/materialcalendarview/R$drawable;
Java.Lang.NoClassDefFoundError: Failed resolution of: Lcom/prolificinteractive/materialcalendarview/R$drawable; ---> Java.Lang.ClassNotFoundException: Didn't find class "com.prolificinteractive.materialcalendarview.R$drawable" on path: DexPathList[[zip file "/data/app/com.fingent.materialcalendarsample-1/base.apk"],nativeLibraryDirectories=[/data/app/com.fingent.materialcalendarsample-1/lib/x86, /vendor/lib, /system/lib]]
at --- End of managed exception stack trace ---
at java.lang.ClassNotFoundException: Didn't find class "com.prolificinteractive.materialcalendarview.R$drawable" on path: DexPathList[[zip file "/data/app/com.fingent.materialcalendarsample-1/base.apk"],nativeLibraryDirectories=[/data/app/com.fingent.materialcalendarsample-1/lib/x86, /vendor/lib, /system/lib]]
at at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.setupChildren(MaterialCalendarView.java:358)
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.<init>(MaterialCalendarView.java:237)
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.<init>(MaterialCalendarView.java:216)
at at md56fd5622393123d59c6c51d78708f2ed2.MainActivity.n_onCreate(Native Method)
at at md56fd5622393123d59c6c51d78708f2ed2.MainActivity.onCreate(MainActivity.java:28)
at at android.app.Activity.performCreate(Activity.java:5990)
at at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at at android.app.ActivityThread.access$800(ActivityThread.java:151)
at at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at at android.os.Handler.dispatchMessage(Handler.java:102)
at at android.os.Looper.loop(Looper.java:135)
at at android.app.ActivityThread.main(ActivityThread.java:5254)
at at java.lang.reflect.Method.invoke(Native Method)
at at java.lang.reflect.Method.invoke(Method.java:372)
at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
at Suppressed: java.lang.ClassNotFoundException: com.prolificinteractive.materialcalendarview.R$drawable
at at java.lang.Class.classForName(Native Method)
at at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
at ... 19 more
at Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
--- End of inner exception stack trace ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/data/lanes/3053/a94a03b5/source/mono/external/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:143
at Android.Runtime.JNIEnv.CallNonvirtualVoidMethod (IntPtr jobject, IntPtr jclass, IntPtr jmethod, Android.Runtime.JValue* parms) [0x00084] in /Users/builder/data/lanes/3053/a94a03b5/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:1029
at Android.Runtime.JNIEnv.FinishCreateInstance (IntPtr instance, IntPtr jclass, IntPtr constructorId, Android.Runtime.JValue* constructorParameters) [0x0000b] in /Users/builder/data/lanes/3053/a94a03b5/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.cs:306
at MaterialCalendarLibrary.MaterialCalendarView..ctor (Android.Content.Context p0) [0x000c5] in /Users/fingent/Projects/MaterialCalendarLibrary/MaterialCalendarLibrary/obj/Release/generated/src/MaterialCalendarLibrary.MaterialCalendarView.cs:505
at MaterialCalendarSample.MainActivity.OnCreate (Android.OS.Bundle savedInstanceState) [0x00009] in /Users/fingent/Documents/sreeraj/workspace/Xamarin.MaterialCalendarView/MaterialCalendarSample/MainActivity.cs:17
at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_ (IntPtr jnienv, IntPtr native__this, IntPtr native_savedInstanceState) [0x00011] in /Users/builder/data/lanes/3053/a94a03b5/source/monodroid/src/Mono.Android/platforms/android-19/src/generated/Android.App.Activity.cs:2475
at at (wrapper dynamic-method) System.Object:0b8c341c-2f19-42d5-83e9-b3a815827e69 (intptr,intptr,intptr)
at --- End of managed exception stack trace ---
at java.lang.NoClassDefFoundError: Failed resolution of: Lcom/prolificinteractive/materialcalendarview/R$drawable;
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.setupChildren(MaterialCalendarView.java:358)
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.<init>(MaterialCalendarView.java:237)
at at com.prolificinteractive.materialcalendarview.MaterialCalendarView.<init>(MaterialCalendarView.java:216)
at at md56fd5622393123d59c6c51d78708f2ed2.MainActivity.n_onCreate(Native Method)
at at md56fd5622393123d59c6c51d78708f2ed2.MainActivity.onCreate(MainActivity.java:28)
at at android.app.Activity.performCreate(Activity.java:5990)
at at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at at android.app.ActivityThread.access$800(ActivityThread.java:151)
at at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at at android.os.Handler.dispatchMessage(Handler.java:102)
at at android.os.Looper.loop(Looper.java:135)
at at android.app.ActivityThread.main(ActivityThread.java:5254)
at at java.lang.reflect.Method.invoke(Native Method)
at at java.lang.reflect.Method.invoke(Method.java:372)
at at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
at Caused by: java.lang.ClassNotFoundException: Didn't find class "com.prolificinteractive.materialcalendarview.R$drawable" on path: DexPathList[[zip file "/data/app/com.fingent.materialcalendarsample-1/base.apk"],nativeLibraryDirectories=[/data/app/com.fingent.materialcalendarsample-1/lib/x86, /vendor/lib, /system/lib]]
at at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at ... 18 more
at Suppressed: java.lang.ClassNotFoundException: com.prolificinteractive.materialcalendarview.R$drawable
at at java.lang.Class.classForName(Native Method)
at at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
at ... 19 more
at Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
Here is the link to the project in Github Xamarin Material CalendarView
It's about missing Resources that should be attached in Material CalendarView, you need an AAR file.
Just go Maven and get latest AAR file that published by Author: http://mvnrepository.com/artifact/com.prolificinteractive/material-calendarview/1.2.0
Remove the material-calendarview.jar and drag new file material-calendarview-1.2.0.aar on your binding project, done!